don't take chantix if you've had a serus allergic or skin reaction to it. if you develop these stop taking chantix and see your doctor right away as some can be life-threatening. if you have a history of heart or blood vessel problems, tell your doctor if you have new or worse symptoms. get medical help right away if you have symptoms of a heart attack. use caution when driving or operating machinery. common side effects include nausea, trouble sleeping and unusual dreams. it helps to have people around you... they say, you're much bigger than this. and you are. [ male announcer ] ask your doctor if chantix is right for you. now back to fox files. >>> ♪ >> what does a famous hollywood actress, a tough fearless hockey player, and a woman who grew up in the 1930s have in common? they are all in the center of a medical mystery which may effect 3 million people living in the united states. we begin with jennifer esposito's story. >> you are new york girl all of the way. >> i am. born in brooklyn and raised in staten island. i wanted to come to the city and st